Пульсоксиметр. Доктор is an Android app developed by ООО БрейнБит. The app is designed to monitor and analyze the pulse and oxygen saturation levels of users who have measured them using the Brain Bit pulse oximeter. The app is free and falls under the Lifestyle category, specifically Health & Fitness.

The app has a straightforward and user-friendly interface, allowing users to view their vital signs' history and track progress over time. The app also provides graphical representations of the data for easy analysis. Furthermore, the app has a feature that allows users to set reminders for when they need to take readings, ensuring that they keep up with their monitoring regimen.

Overall, Пульсоксиметр. Доктор is an excellent app for anyone who wants to keep track of their vital signs. It is easy to use, provides comprehensive data analysis, and is available for free on the Google Play Store.